Yes, when Swift was announced with the REPL, I though "that's great, I will use it instead on the Python one, for quick calculations and trying out new APIs".
But each time I start the REPL it is totally broken, or the autocomplete feature crashes the REPL or the history is unusable. Each time I think, this is an obvious and huge bug it will probably be fixed by the next release, but nope.
I really hope that fixing the REPL and making it quick and good is part of the point #2: Create a fantastic development experience of @tkremenek Swift 6 manifesto.